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Finding the Fourth Proportional to 32,114.40, 48,142.80 and 28,615.20

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Solution

The fourth proportional to 32,114.40, 48,142.80 and 28,615.20 is: 42,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,114.40 : 48,142.80 = 28,615.20 : x
  2. Step 2: Convert to fraction form
    32,114.40/48,142.80 = 28,615.20/x
  3. Step 3: Cross multiply
    32,114.40x = 48,142.80 × 28,615.20
  4. Step 4: Simplify right side
    32,114.40x = 1,377,615,850.56
  5. Step 5: Solve for x
    x = 1,377,615,850.56/32,114.40
  6. Step 6: Final answer
    x = 42,897.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.